Edge spreading lithography and its application to the fabrication of mesoscopic gold and silver rings
Journal of the American Chemical Society, 2004•ACS Publications
A new form of edge lithography, edge spreading lithography (ESL), has been demonstrated
and applied to the formation of coinage metal rings. In this process, alkanethiols are
delivered from a flat PDMS stamp to the surface of a metal film through a two-dimensional
array of spherical silica colloids. The thiols further spread on the metal surface, forming
highly ordered SAMs in the form of a ring pattern. Following lift-off of beads, the pattern in the
SAMs can be transferred into the metal film through wet chemical etching, with SAMs serving …
and applied to the formation of coinage metal rings. In this process, alkanethiols are
delivered from a flat PDMS stamp to the surface of a metal film through a two-dimensional
array of spherical silica colloids. The thiols further spread on the metal surface, forming
highly ordered SAMs in the form of a ring pattern. Following lift-off of beads, the pattern in the
SAMs can be transferred into the metal film through wet chemical etching, with SAMs serving …
A new form of edge lithography, edge spreading lithography (ESL), has been demonstrated and applied to the formation of coinage metal rings. In this process, alkanethiols are delivered from a flat PDMS stamp to the surface of a metal film through a two-dimensional array of spherical silica colloids. The thiols further spread on the metal surface, forming highly ordered SAMs in the form of a ring pattern. Following lift-off of beads, the pattern in the SAMs can be transferred into the metal film through wet chemical etching, with SAMs serving as the resist. The dimensions of the rings can be readily controlled by several parameters such as the beads diameter, the concentration of the thiol solution, and the contact time between the stamp and the silica beads.
ACS Publications
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